// Copyright (c) 2008 Van Goethem Yves and project contributors
// http://code.google.com/p/png-hack/
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
document.write('<style type="text/css">.hack-png{visibility:hidden}</style>');
var PNGHack = function(spacer) {
	var images = [];
	var imgSpacer = (spacer) ? spacer : 'images/spacer.gif';
	var go = function() {
		for (var i = 0; i < document.images.length; i++) {
			var img = document.images[i];
			if (img.className == 'hack-png') {
				images.push(img);
				hack(img);
			}
		}
	};
	var hack = function(img) {
		var imgSrc = (typeof(img.pngsrc) == 'undefined') ? img.pngsrc = img.src : img.pngsrc;
		img.style.height = img.offsetHeight + 'px';
		img.style.width = img.offsetWidth + 'px';
		img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+imgSrc+"',sizingMethod='scale')";
		img.src = imgSpacer;
		img.style.visibility = 'visible';
	};
	return {
		go : go,
		hack : hack,
		images : images
	};
};